Impaired developmental apoptosis, lymphocyte homeostasis and premature lethality in the absence of the BH3-only proteins BIM and BMF
- Author(s)
- Labi, V; Woess, C; Tuzlak, S; Erlacher, M; Bouillet, P; Strasser, A; Tzankov, A; Villunger, A;
- Details
- Publication Year 2014-04-24,Volume 123,Issue #17,Page 2652-2662
- Journal Title
- Blood
- Publication Type
- Journal Article
- Abstract
- BH3 domain-only proteins (BH3-only) proteins are members of the Bcl-2 family that play crucial roles in embryogenesis and the maintenance of tissue homeostasis by triggering apoptotic cell death. The BH3-only protein Bim is critical for developmental apoptosis of lymphocytes, securing establishment of tolerance and for the termination of immune responses. Bim is believed to act in concert with other BH3-only proteins or members of the tumor necrosis factor receptor family in getting rid of unwanted cells. Bmf, a related BH3-only protein, was shown to play a role in B-cell homeostasis and to mediate cell death in response to certain apoptotic triggers, including glucocorticoid, histone deacetylase inhibitors, and overexpression of the c-Myc proto-oncogene. Here we show that Bim and Bmf have overlapping functions during mouse development and coregulate lymphocyte homeostasis and apoptosis in a nonredundant manner. Double deficiency of Bim and Bmf caused more B lymphadenopathy than loss of either BH3-only protein alone, and this was associated with autoimmune glomerulonephritis and a range of malignancies in aged mice. Thus, our results demonstrate that Bim and Bmf act in concert to prevent autoimmunity and malignant disease, strengthening the rational for the development of BH3-only protein mimicking therapeutics for the treatment of such disorders.
- Publisher
- American Society for Hematology
- Research Division(s)
- Molecular Genetics Of Cancer
- Link To PubMed Central Version
- http://www.ncbi.nlm.nih.gov.ezp.lib.unimelb.edu.au/pmc/articles/PMC3999752/
- Publisher's Version
- https://doi.org/10.1182/blood-2013-11-537217
- Terms of Use/Rights Notice
- © 2014 by The American Society of Hematology
Creation Date: 2014-05-15 12:41:46